Military intervention authorized for 12 months for all member states to stop vessels going to or from Libya

UNITED NATIONS—The United Nations Security Council on Tuesday unanimously adopted a resolution targeting the flow of weapons into Libya, where Islamic State is gaining ground, by allowing interception of ships in high seas destined for the country.

The resolution, introduced by the United Kingdom with support from France and Spain, authorizes military intervention for 12 months by all member states to stop vessels going to or from Libya for inspection and to seize weapons on board.